Due to a planned power outage on Friday, 1/14, between 8am-1pm PST, some services may be impacted.
"Supplement to appendix 8, report of the superintendent of the ... Survey for 1899, entitled 'Precise leveling in the United States,' and appendix 3, report for 1903, entitled 'Precise leveling in the United States, 1900-1903 ...'" cf. p. 5.